The I’m-Totally-Screwed-for-Chapter-2-Kovach-Chem-Test Set Flashcard

Atomic Theory
1. All elements are composed of atoms and all atoms of an element are identical (had to be revised due to isotopes)
2. In a chemical reaction atoms are not changed into diferent types of atoms (nuclear reactions can change the composition of an atom (changes protons))
3. Compounds are formed when atoms of elements combine
Law of Multiple Proportions
The ratios of masses will always be whole numbers
Radioactivity
the sponataneous disintegration of an unstable atomic nucleus (determined by the ratio of pro/nue (less or more than 1-1.15 is unstable))
Nuclear Fissian
(Radioactivity) When one nucleus breaks down
Nuclear Fusion
2 nuclei bonded together to form a larger atom
Mass Number
Number of protons added to the number of nuetrons
Atomic Number
The number of Protons
How to calculate average atomic mass
(do for each isotope, then add products)
% of abundance * weight in amu
Properties of Metals
maleable, shiny, ductile, conductive
Left side periodic table
lose electrons (+)
Properties of Nonmetals
non maleable, not shiny, not ductile, not conductive.
right side of periodic table
gain electrons (-)
Empirical Formula
lowest who number ratio of atoms
charge of Al
3+
Charge of transition elements
usually 2+
naming Covalent (or molecular) compounds
(2 nonmetals or 1 nonmetal+1metaloid)
add -ide ending to second substance
add greek prefix to both substances
if first one is mono, drop prefix
Greek Prefixes
mono
di
tri
tetra
penta
hexa
octa
nona
deca
Elements with more than one charge
[image]
Alpha Particle
[image]
Beta Particle

[image]

ignore the B-; Ms. Kovach has decided to.

Get instant access to
all materials

Become a Member